/Engine/Source/Runtime/Engine/Public/Streaming/LevelStreamingDelegates.h
Called when a new target state for a streaming level is determined. Can be used to measure latency between requests and application (e.g. limits on current level loads & visibility changes)
static [TMulticastDelegate](API\Runtime\Core\Delegates\TMulticastDelegate)< void([UWorld](API\Runtime\Engine\Engine\UWorld) *, const [ULevelStreaming](API\Runtime\Engine\Engine\ULevelStreaming) *, [ULevel](API\Runtime\Engine\Engine\ULevel) *LevelIfLoaded, ELevelStreamingState[Current](API\Plugins\DatasmithContent\EDatasmithImportSearchPackagePol-), ELevelStreamingTargetState PrevTarget, ELevelStreamingTargetState NewTarget)> OnLevelStreamingTargetStateChanged;